Midwest Industries AR15 Barrel Nut Wrench Features The Midwest Industries AR15 Barrel Nut Wrench is machined from rugged 17-4 stainless steel giving it the strength to withstand repeated use in a shop or armory setting. The dedicated drive end is designed to engage all Midwest Industries free float barrel nuts including the CRMHD CRM SLH CRT CRLW ULW G3M G4M and SP Series handguard systems. This precise fit reduces the risk of rounding off or damaging the barrel nut during installation or removal. Compatible with both 5.56 and 7.62 AR platform rifles the wrench covers the needs of builders working across multiple calibers. A three-notch castle nut driver is also built into the tool giving secure engagement when installing or removing a buffer tube castle nut during stock assembly. The integrated 1/2 inch drive interface lets the wrench be used with a torque wrench ensuring barrel nuts and castle nuts are tightened to proper specification. This attention to torque accuracy helps protect the barrel extension and receiver threads from damage caused by over-tightening. Finished in Silver the Midwest Industries AR15 Barrel Nut Wrench is for sale at GrabAGun for serious builders and armorers who need a durable precise tool for repeat AR platform assembly and service. Midwest Industries AR15 Barrel Nut Wrench Specifications Manufacturer: Midwest Industries Model: AR15 Barrel Nut Wrench Color: Silver Material: Stainless Steel Available At: GrabAGun